That is not an established precedent. (It's not what that case decided.)
* focusing on the US given this site and the outsized influence it has on global copyright
That's the same in the US/UK/AU/NZ/CA/DE/JP/IN.
The difference in the US is that SCOTUS basically made it impossible to restrict corporate spending on politics. That is what needs to be fixed in the US, not Corporate Personhood.